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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_LIBDEXFILE_DEX_CLASS_ACCESSOR_INL_H_
#define ART_LIBDEXFILE_DEX_CLASS_ACCESSOR_INL_H_
#include "class_accessor.h"
#include "base/leb128.h"
#include "class_iterator.h"
#include "code_item_accessors-inl.h"
namespace art {
inline ClassAccessor::ClassAccessor(const ClassIteratorData& data)
: ClassAccessor(data.dex_file_, data.dex_file_.GetClassDef(data.class_def_idx_)) {}
inline ClassAccessor::ClassAccessor(const DexFile& dex_file, const DexFile::ClassDef& class_def)
: dex_file_(dex_file),
descriptor_index_(class_def.class_idx_),
ptr_pos_(dex_file.GetClassData(class_def)),
num_static_fields_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u),
num_instance_fields_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u),
num_direct_methods_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u),
num_virtual_methods_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u) {}
inline const uint8_t* ClassAccessor::Method::Read(const uint8_t* ptr) {
index_ += DecodeUnsignedLeb128(&ptr);
access_flags_ = DecodeUnsignedLeb128(&ptr);
code_off_ = DecodeUnsignedLeb128(&ptr);
return ptr;
}
inline const uint8_t* ClassAccessor::Field::Read(const uint8_t* ptr) {
index_ += DecodeUnsignedLeb128(&ptr);
access_flags_ = DecodeUnsignedLeb128(&ptr);
return ptr;
}
template <typename DataType, typename Visitor>
inline const uint8_t* ClassAccessor::VisitMembers(size_t count,
const Visitor& visitor,
const uint8_t* ptr,
DataType* data) const {
DCHECK(data != nullptr);
for ( ; count != 0; --count) {
ptr = data->Read(ptr);
visitor(*data);
}
return ptr;
}
template <typename StaticFieldVisitor,
typename InstanceFieldVisitor,
typename DirectMethodVisitor,
typename VirtualMethodVisitor>
inline void ClassAccessor::VisitFieldsAndMethods(
const StaticFieldVisitor& static_field_visitor,
const InstanceFieldVisitor& instance_field_visitor,
const DirectMethodVisitor& direct_method_visitor,
const VirtualMethodVisitor& virtual_method_visitor) const {
Field field(dex_file_);
const uint8_t* ptr = VisitMembers(num_static_fields_, static_field_visitor, ptr_pos_, &field);
field.NextSection();
ptr = VisitMembers(num_instance_fields_, instance_field_visitor, ptr, &field);
Method method(dex_file_, /*is_static_or_direct*/ true);
ptr = VisitMembers(num_direct_methods_, direct_method_visitor, ptr, &method);
method.NextSection();
ptr = VisitMembers(num_virtual_methods_, virtual_method_visitor, ptr, &method);
}
template <typename DirectMethodVisitor,
typename VirtualMethodVisitor>
inline void ClassAccessor::VisitMethods(const DirectMethodVisitor& direct_method_visitor,
const VirtualMethodVisitor& virtual_method_visitor) const {
VisitFieldsAndMethods(VoidFunctor(),
VoidFunctor(),
direct_method_visitor,
virtual_method_visitor);
}
template <typename StaticFieldVisitor,
typename InstanceFieldVisitor>
inline void ClassAccessor::VisitFields(const StaticFieldVisitor& static_field_visitor,
const InstanceFieldVisitor& instance_field_visitor) const {
VisitFieldsAndMethods(static_field_visitor,
instance_field_visitor,
VoidFunctor(),
VoidFunctor());
}
inline const DexFile::CodeItem* ClassAccessor::GetCodeItem(const Method& method) const {
return dex_file_.GetCodeItem(method.GetCodeItemOffset());
}
inline CodeItemInstructionAccessor ClassAccessor::Method::GetInstructions() const {
return CodeItemInstructionAccessor(dex_file_, dex_file_.GetCodeItem(GetCodeItemOffset()));
}
inline const char* ClassAccessor::GetDescriptor() const {
return dex_file_.StringByTypeIdx(descriptor_index_);
}
inline const DexFile::CodeItem* ClassAccessor::Method::GetCodeItem() const {
return dex_file_.GetCodeItem(code_off_);
}
inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>> ClassAccessor::GetFields()
const {
const uint32_t limit = num_static_fields_ + num_instance_fields_;
return { DataIterator<Field>(dex_file_, 0u, num_static_fields_, limit, ptr_pos_),
DataIterator<Field>(dex_file_, limit, num_static_fields_, limit, ptr_pos_) };
}
inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Method>>
ClassAccessor::GetMethods() const {
// Skip over the fields.
Field field(dex_file_);
const size_t skip_count = num_static_fields_ + num_instance_fields_;
const uint8_t* ptr_pos = VisitMembers(skip_count, VoidFunctor(), ptr_pos_, &field);
// Return the iterator pair for all the methods.
const uint32_t limit = num_direct_methods_ + num_virtual_methods_;
return { DataIterator<Method>(dex_file_, 0u, num_direct_methods_, limit, ptr_pos),
DataIterator<Method>(dex_file_, limit, num_direct_methods_, limit, ptr_pos) };
}
} // namespace art
#endif // ART_LIBDEXFILE_DEX_CLASS_ACCESSOR_INL_H_
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